Reply to Firkins and Krishna - Kovacevic, Bojan; Klausen, Pia; Rift, Charlotte Vestrup; Toxværd, Anders; Grossjohann, Hanne; Karstensen, John Gásdal; Brink, Lene; Hassan, Hazem; Kalaitzakis, Evangelos; Storkholm, Jan; Hansen, Carsten Palnæs; Hasselby, Jane Preuss; Vilmann, Peter (Endoscopy, 2020)